Hi guys,
I am using flink version 1.7.2.
I am trying to write to hdfs sink from my flink job. I setup HADOOP_HOME.
Here is the debug log for this :
2020-03-19 18:59:34,316 DEBUG
org.apache.flink.runtime.util.HadoopUtils - Cannot
find hdfs-default configuration-file path in Flink config.
2020-03-19 18:59:34,317 DEBUG
org.apache.flink.runtime.util.HadoopUtils - Cannot
find hdfs-site configuration-file path in Flink config.
2020-03-19 18:59:34,317 DEBUG
org.apache.flink.runtime.util.HadoopUtils - Adding
/home/was/HDFSConf/conf/core-site.xml to hadoop configuration
2020-03-19 18:59:34,317 DEBUG
org.apache.flink.runtime.util.HadoopUtils - Adding
/home/was/HDFSConf/conf/hdfs-site.xml to hadoop configuration
2020-03-19 18:59:34,344 INFO
org.apache.flink.runtime.security.modules.HadoopModule - Hadoop
user set to kafka (auth:KERBEROS)
This is what my streaming file sink code looks like.
val sink: StreamingFileSink[String] = StreamingFileSink
.forRowFormat(new Path("hdfs://tmp/auditlog/"), new
SimpleStringEncoder[String]("UTF-8"))
.withRollingPolicy(DefaultRollingPolicy.create()
.withRolloverInterval(TimeUnit.MINUTES.toMillis(15))
.withInactivityInterval(TimeUnit.MINUTES.toMillis(5))
.withMaxPartSize(1024
* 1024 * 1024)
.build())
.build()
result.addSink(sink).name("HDFSSink")
When I run the job I get this error stack trace :
INFO org.apache.flink.runtime.executiongraph.ExecutionGraph -
Sink: HDFSSink (1/1) (27b62d6294da47491041d750daf421a0) switched from
RUNNING to FAILED.
java.io.IOException: Cannot instantiate file system for URI: hdfs://tmp/auditlog
at
org.apache.flink.runtime.fs.hdfs.HadoopFsFactory.create(HadoopFsFactory.java:187)
at
org.apache.flink.core.fs.FileSystem.getUnguardedFileSystem(FileSystem.java:399)
at org.apache.flink.core.fs.FileSystem.get(FileSystem.java:318)
at
org.apache.flink.streaming.api.functions.sink.filesystem.Buckets.<init>(Buckets.java:112)
at
org.apache.flink.streaming.api.functions.sink.filesystem.StreamingFileSink$RowFormatBuilder.createBuckets(StreamingFileSink.java:242)
at
org.apache.flink.streaming.api.functions.sink.filesystem.StreamingFileSink.initializeState(StreamingFileSink.java:327)
at
org.apache.flink.streaming.util.functions.StreamingFunctionUtils.tryRestoreFunction(StreamingFunctionUtils.java:178)
at
org.apache.flink.streaming.util.functions.StreamingFunctionUtils.restoreFunctionState(StreamingFunctionUtils.java:160)
at
org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.initializeState(AbstractUdfStreamOperator.java:96)
at
org.apache.flink.streaming.api.operators.AbstractStreamOperator.initializeState(AbstractStreamOperator.java:278)
at
org.apache.flink.streaming.runtime.tasks.StreamTask.initializeState(StreamTask.java:738)
at
org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:289)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:704)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.IllegalArgumentException:
java.net.UnknownHostException: tmp
at
org.apache.hadoop.security.SecurityUtil.buildTokenService(SecurityUtil.java:378)
at
org.apache.hadoop.hdfs.NameNodeProxies.createNonHAProxy(NameNodeProxies.java:320)
at
org.apache.hadoop.hdfs.NameNodeProxies.createProxy(NameNodeProxies.java:176)
at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:687)
at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:628)
at
org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFileSystem.java:149)
Why is it trying to connect to /tmp ? Is it not supposed to get the
namenodes from the core-site.xml and hdfs-site.xml ?
Can you please help with the correct way to configure hdfs sink.
Best,
Nick.
